package io.fredia.femicro.common.util;

import javax.servlet.http.HttpServletRequest;

/**
 * ip工具
 * 
 * @author : Fredia
 * @since : 2018年3月12日
 * @version : v1.0.0
 */
public class ClientUtil {
	/**
	 * 获取客户端真实ip
	 * 
	 * @param request
	 * @return
	 * @author : Fredia
	 * @since : 2018年3月12日
	 * @return :String
	 */
	public static String getClientIp(HttpServletRequest request) {
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getRemoteAddr();
		}
		return ip;
	}
}
